1 / 13

The Ejection Envelope

The Ejection Envelope. NACES SJU-17. Thanks to Jeff Nichols NAWCAD 4.6.2.1. WASAW - Envelope Parameters. W eight. A irspeed/Velocity. A ttitude. S ink Rate. W ind. Phases of Ejection. Catapult Aerodynamic Loading Recovery. NACES (SJU-17). Weight. Preview of upcoming slides.

virginia-mcknight
Télécharger la présentation

The Ejection Envelope

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. The Ejection Envelope NACES SJU-17 Thanks to Jeff Nichols NAWCAD 4.6.2.1

  2. WASAW - Envelope Parameters Weight Airspeed/Velocity Attitude Sink Rate Wind

  3. Phases of Ejection • Catapult • Aerodynamic Loading • Recovery NACES (SJU-17)

  4. Weight

  5. Preview of upcoming slides

  6. Velocity and Sink Rate Mode II 280 Mode I Mode III • Orderly increase in altitude requirement up to 4000 fpm • Aerodynamic Loading • Sequencer • Mode I (<300) • Mode II (300 - 500) • Mode III (>500) • Recovery 40 10,000 4,000

  7. Velocity and Dive Angle 2000 • Lawn darts need more altitude 250 90

  8. Stay with me, now……….

  9. Velocity and Bank Angle Mode II 220 Mode I Mode III • Sequencer, again • Parachute opening, again 25 180 60

  10. Wind Speed • Factor in 0/0 • Recovery Phase • Forward velocity aids parachute inflation • Tailwind can slow down opening

  11. Scenario Based Terrain Clearance Requirement

  12. Summary “altitude is your friend” Ideal conditions: 136-213# occupant 2000’ agl Under 300 kts Straight and level

  13. The difference between & IS Questions? Comments!

More Related